Instantly encode text to Base64 or decode Base64 to text - 100% free, no signup
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This free online Base64 Encoder/Decoder tool allows you to quickly convert data between plain text and Base64 format. Base64 is a widely used binary-to-text encoding method for safely transmitting data in emails, URLs, and XML or JSON files. With instant encoding and decoding, this tool helps developers, API integrators, and data handlers work efficiently with encoded content. It runs directly in your browser with no signup required, ensuring speed and privacy. Whether you are encoding data for transmission or decoding Base64 strings for analysis, this tool provides a simple, reliable, and efficient solution for handling encoded data accurately.
Encode text to Base64 and decode Base64 back to text seamlessly
Generate URL-safe Base64 strings for web applications and APIs
Upload and process text files directly without size limitations
Process multiple lines or entries simultaneously
All processing happens locally in your browser - no server uploads
No registration, no limits, completely free to use
Choose between "Encode to Base64" to convert text to Base64 format, or "Decode from Base64" to convert Base64 back to readable text.
Type or paste your text in the input area. You can also upload files using the upload button for batch processing.
Toggle URL-safe encoding for web use, set line wrapping preferences, or enable batch processing for multiple entries.
Click "Convert Now" to see the result. Copy the output or use it directly in your applications.
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Base64 encoding is commonly used for:
No, Base64 is encoding, not encryption. It doesn't provide security but ensures data can be transmitted through text-only systems. Anyone can decode Base64 back to the original data.
URL-safe Base64 replaces the + and / characters with - and _ respectively, and removes padding (=). This makes the encoded string safe to use in URLs without additional percent-encoding.
Example: Regular: SGVsbG8rV29ybGQ= → URL-safe: SGVsbG8rV29ybGQ
This tool supports text files (.txt, .json, .xml, .html, .css, .js). For binary files (images, PDFs, etc.), you would need to upload them as text files containing the Base64 string, or use a specialized binary-to-text tool.
Base64 encodes 3 bytes of binary data into 4 ASCII characters, resulting in approximately 33% size increase. This overhead is necessary to represent binary data using only 64 printable ASCII characters.
Yes, absolutely! All processing happens locally in your browser. We don't send your data to any server, store it, or log it. Your privacy is guaranteed.